ASTM B Standard Specification for Wire for Use In Wire-Wound Resistors. ASTM-B – Download as PDF File .pdf), Text File .txt) or read online. Non Ferrous Standard. This specification covers round wires and ribbons with controlled electrical properties made from magnetic and nonmagnetic class 1a alloys.
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The second covering shall be wrapped in the opposite direction from the? Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.
Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.
It shall be g267 from voids or bare spots and have a minimum of back twist. Temperature Coefficient of Resistance 8.
Alloy Class 1 3 4 5 6 Color purple yellow red pink ivory The wires and ribbons, which may have insulated coverings or enamel coatings, are recommended for use in wire-wound resistance units like precision resistors and other similar applications, but not for use as electrical heating elements.
ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date. Last previous edition approved in xstm B — 90 All of the information included in this note is based on measurements made in accordance with Test Method B D in Diameter in.
ASTM B267 – 07(2018), Standard Specification for Wire for Use In Wire-Wound Resistors
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. The test shall be made 2 to 10 min after removal of the wire from the oil, lightly wiping off the excess oil.
C The maximum temperature values listed apply aztm the alloy wire only. B Alloy Classes 1a, 1b, 1c, 2a, 2b, 3a, 4, and 6 are designed to give a low emf versus copper. Maximum indicates the maximum deviation from zero and the plus or minus sign the polarity of the couple.
Permissible Variations in Electrical Resistance It is the responsibility of the user of this standard to become familiar with all hazards including those identi? It shall include both single and double coverings. The electrical resistance per unit length can be determined more accurately than the dimensions of very small wire.
This is not valid in view of modern rolling equipment and practices, but still is widely used as a basis of description.
The surface of the coating shall be smooth and uniform. Link to Active This link will always route to the current Active version of the standard. This standard is subject to revision at any asfm by the responsible technical committee and must be reviewed every?
D If metric sizes are desired, 1 in.
No further reproductions authorized. Ribbon actually is made to a speci? Current edition approved May 1, The enamel shall not be underbaked so that one turn adheres to the next on a spool. This slope is determined from the following equation: Nominal Electrical Resistance per Unit Length 7. To convert from pounds to kilograms multiply by 0. B — 07 ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.
This abstract is a brief summary of the referenced standard. Values shown for other classes are for information only. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.
ASTM B – 07 Standard Specification for Wire for Use In Wire-Wound Resistors
The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. Wire larger in diameter than sizes listed in Table 6 may be supplied on spools Table 7 or in coils depending on agreement between the manufacturer and the purchaser.
This specification covers round wires and ribbons with controlled electrical properties made from magnetic and nonmagnetic class 1a alloys. B — 07 Standard Speci?
ASTM B Standard Specification for Wire for Use In Wire-Wound Resistors_百度文库
A superscript epsilon e indicates an editorial change since the last revision or reapproval. The b627 resistance per unit length for a round wire is calculated from the nominal resistivity and nominal cross-sectional area. Historical Version s – view previous versions of standard.
To convert from inches to millimetres multiply by Outside Diameter, max, in.